The archipelagos of Orkney and Shetland are the products of some of
the most dramatic events which have occurred in the Earth's
history. The Shetlands are the eroded roots of a vast mountain
range that once soared to Himalayan heights and extended from
Scandinavia to the Appalachians. Around 65 million years ago, this
mighty chain was split asunder by the shifting of the Earth's
tectonic plates, and the North Atlantic Ocean was formed. In
earlier times, the area was occupied by a huge freshwater lake -
Lake Orcadie - which existed for almost 10 million years and was
home to a wide range of primitive species of fish. Later, during
the last Ice Age, the area was completely submerged beneath ice
sheets which left an indelible mark on the landscapes of both
island groups. This book tells the incredible geological story of
the most northerly outposts of the British Isles.
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